Like Doom 3, graphics cards are starved for information from the system and CPU. All of the cards can play Half-Life 2 and all of its variants like Counter-Strike Source and Episode 1 at 1600x1200 with 4x antialiasing, 8x anisotropic filtering and HDR enabled. One thing that sticks out in this test is that the overclocked EVGA GeForce 7800GT is able to beat the stock speeds of the PNY GeForce 7800GTX. In system-limited games, even a little boost to the graphics memory and core can add to the overall results.